CLASS B0739+366, a double image gravitational lens

Lens System Summary

This double-image lens has significantly extended, weak VLBA substructure. NICMOS shows the two images and the lensing galaxy. Predictions from modelling suggest that the time delay between the images is too small to be effectively monitored (7 h-1 days). This lens is not in the CLASS complete sample because it is too faint at 5GHz.

This Lens System

Lens name

B0739+366

Survey

CLASS

Images

2

B1950.0 coords

07h39m32.507s

36°41'51.880"

J2000.0 coords

07h42m51.169s

36°34'43.638"

Lens System Structure and Labelling

Image labelling for this lens (RA increases to the left, declination increases upwards)

Image/Lens Positions

Image/Lens

Relative Position

East (mas)

North (mas)

A1

+0.0

+0.0

A2

+2.4

+1.0

B

+221.7±1

-491.0±1

Image/Lens Separations

Separation (mas)

Component

A1

A2

B

A1

2.6

538.7

A2

2.6

538.7

B

538.7

538.7

Position angle (°)

Component

A1

A2

B

A1

-112.6

-24.3

A2

67.4

-24.0

B

155.7

156.0

Maps and Images

Click on an image to see a larger JPEG version, or click on the accompanying text to
download a gzipped FITS or PostScript file of the map or image. The images and maps are
available in one gzipped file here.
To see a DSS image of the region around this lens, click here - note that you will have to start the search manually by clicking on the 'Search' button.

Optical Imaging

Lens Models

Click on the model's reference number to go to the relevant paper's abstract on ADS.

[1] Marlow et al. fixed SIE to point of peak surface brightness in NICMOS image. Constraints from VLBA unused since substructure is weak and heavily resolved. Suggests time delay between images A and B of 7 h-1 days, i.e. probably too short for effective monitoring.